Logic element and article comprising the element

(19)

(11)

EP 0 454 343 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	22.01.1992 Bulletin 1992/04

(43)	Date of publication A2:
	30.10.1991 Bulletin 1991/44

(21)	Application number: 91303370.0

(22)	Date of filing: 16.04.1991

(51)	International Patent Classification (IPC)⁵: H03K 19/00

(84)	Designated Contracting States:
	DE FR GB

(30)

Priority:

25.04.1990 US 514078

(71)	Applicant: AT&T Corp.
	New York, NY 10013-2412 (US)

(72)	Inventors:
	Luryi, Sergey Bridgewater, New Jersey 08807 (US) Pinto, Mark Richard Morristown, New Jersey 07960 (US)

(74)	Representative: Watts, Christopher Malcolm Kelway, Dr. et al
	AT&T (UK) LTD. AT&T Intellectual Property Division 5 Mornington Road Woodford Green Essex IG8 OTU Woodford Green Essex IG8 OTU (GB)

(56)

References cited: :

(54)	Logic element and article comprising the element

(57) Disclosed are a novel logic element (designated NORAND), and articles that comprise the element. Exemplarily, the NORAND element comprises three input terminals (A,B,C) and an output terminal (42). If one of the input terminals is at logic 0 then the element functions as a logic NOR unit, and if the terminal is at logic 1 the element functions as a logic AND unit. The novel element thus makes possible reprogrammable and/or self-organizing logic circuits. The NORAND element can be realized with a single active semiconductor device, exemplarily a real space transfer (RST) device.

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